package com.common.utils;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.ConnectException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.Set;

import org.apache.log4j.Logger;

import com.common.db.JsonVO;

public class UrlConnectUtil {

	private static Logger log = Logger.getLogger(UrlConnectUtil.class.getName());

	/**
	 * 指定 URL 发送POST方法的请求
	 * @param url  发送请求的 URL
	 * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
	 * @return 所代表远程资源的响应结果
	 */
	public static String sendPost(String url, String param) throws Exception{
		StringBuffer result = new StringBuffer();
		PrintWriter out = null;
		BufferedReader in = null;

		try{
			log.debug("------"+url+"?"+param);
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			URLConnection conn = realUrl.openConnection();
			// 设置通用的请求属性
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			// 发送POST请求必须设置如下两行
			conn.setDoOutput(true);
			conn.setDoInput(true);
			// 获取URLConnection对象对应的输出流
			//out = new PrintWriter(conn.getOutputStream());
			out = new PrintWriter(new OutputStreamWriter(conn.getOutputStream(), "UTF-8"));
			// 发送请求参数
			out.print(param);
			// flush输出流的缓冲
			out.flush();
			// 定义BufferedReader输入流来读取URL的响应
			in = new BufferedReader( new InputStreamReader(conn.getInputStream(), "UTF-8"));
			String line;
			while ((line = in.readLine()) != null) {
				result.append( line );
			}
		}catch(FileNotFoundException e){
			result.append("errorWL");
			log.error("------网络异常！"+e);
			e.printStackTrace();
			throw new FileNotFoundException();
		}catch(ConnectException e){
			result.append("errorLJ");
			log.error("------链接异常！"+e);
			e.printStackTrace();
		}
		catch (Exception e) {
			result.append("error");
			log.error("------发送 POST 请求出现异常！"+e);
			e.printStackTrace();
		}
		//使用finally块来关闭输出流、输入流
		finally{
			try{
				if(out!=null){
					out.close();
				}
				if(in!=null){
					in.close();
				}
			}catch(IOException ex){
				ex.printStackTrace();
			}
		}
		log.debug("------retvalue="+result.toString());
		return result.toString();
	}

	public static void main(String[] args) {
		UrlConnectUtil uc = new UrlConnectUtil();
		String para = "gys1";
		try {
			String jsonStr = uc.sendPost("http://localhost:9080/SHERP/t_erp_customer/getT_erp_customerByCustno", "custno="+para);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		//T_customer customer = uc.getErpCustomerByCustno(jsonStr);
		//log.debug("-----returncode="+customer.getReturncode());
		//log.debug("------customer="+customer.toString());

	}

}
